Inverted perovskite solar cells using dimethylacridine-based dopants

Tan，Qin1; Li，Zhaoning1; Luo，Guangfu1; Zhang，Xusheng1; Che，Bo2; Chen，Guocong1; Gao，Han1; He，Dong1; Ma，Guoqiang1; Wang，Jiafeng1; Xiu，Jingwei1; Yi，Huqiang1; Chen，Tao2; He，Zhubing1

2023-08-17

10.1038/s41586-023-06207-0

Nature   Impact Factor & Quartile

0028-0836

1476-4687

Doping of perovskite semiconductors and passivation of their grain boundaries remain challenging but essential for advancing high-efficiency perovskite solar cells. Particularly, it is crucial to build perovskite/indium tin oxide (ITO) Schottky contact based inverted devices without predepositing a layer of hole-transport material. Here we report a dimethylacridine-based molecular doping process used to construct a well-matched p-perovskite/ITO contact, along with all-round passivation of grain boundaries, achieving a certified power conversion efficiency (PCE) of 25.39%. The molecules are shown to be extruded from the precursor solution to the grain boundaries and the bottom of the film surface in the chlorobenzene-quenched crystallization process, which we call a molecule-extrusion process. The core coordination complex between the deprotonated phosphonic acid group of the molecule and lead polyiodide of perovskite is responsible for both mechanical absorption and electronic charge transfer, and leads to p-type doping of the perovskite film. We created an efficient device with a PCE of 25.86% (reverse scan) and that maintained 96.6% of initial PCE after 1,000 h of light soaking.

SCI

English

NI Journal Papers ; NI论文

First ; Corresponding

National Natural Science Foundation of China["U2001216","52273266"] ; Shenzhen Key Laboratory Project[ZDSYS201602261933302] ; Guangdong Provincial Key Laboratory of Computational Science and Material Design[2019B030301001] ; Shenzhen Science and Technology Innovation Committee[JCYJ20200109141412308]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001045210800001

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BIOLOGY & BIOCHEMISTRY;CLINICAL MEDICINE;MULTIDISCIPLINARY;PLANT & ANIMAL SCIENCE;ENVIRONMENT/ECOLOGY;SOCIAL SCIENCES, GENERAL;MICROBIOLOGY;ECONOMICS BUSINESS;IMMUNOLOGY;MATERIALS SCIENCE;COMPUTER SCIENCE;SPACE SCIENCE;MOLECULAR BIOLOGY & GENETICS;CHEMISTRY;NEUROSCIENCE & BEHAVIOR;PHYSICS;GEOSCIENCES;ENGINEERING

2-s2.0-85163081129

Scopus

1.Department of Materials Science and Engineering,Institute of Innovative Materials,Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation,Southern University of Science and Technology,Shenzhen,China
2.Hefei National Laboratory for Physical Sciences at the Microscale,Department of Materials Science and Engineering,University of Science and Technology of China,Hefei,China

Tan，Qin,Li，Zhaoning,Luo，Guangfu,et al. Inverted perovskite solar cells using dimethylacridine-based dopants[J]. Nature,2023,620(7974):545-551.

Tan，Qin.,Li，Zhaoning.,Luo，Guangfu.,Zhang，Xusheng.,Che，Bo.,...&He，Zhubing.(2023).Inverted perovskite solar cells using dimethylacridine-based dopants.Nature,620(7974),545-551.

Tan，Qin,et al."Inverted perovskite solar cells using dimethylacridine-based dopants".Nature 620.7974(2023):545-551.